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USPTO Patent Rankings Data through Dec 31, 2025
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Henry Downs — 6 Patents

SPSpx: 4 patents #73 of 468Top 20%
CDCom Dev: 1 patents #33 of 86Top 40%
FSFederal Signal: 1 patents #293 of 717Top 45%
Kitchener, CA: #251 of 1,348 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Henry Downs has been granted 6 US patents while listed as an inventor at Spx. The first was granted in 1989 and the most recent in January 2011. Henry Downs ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Henry Downs in Kitchener, ON, CA.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7864001 Manifold combiner for multi-station broadcast sites apparatus and method Kevin Lorenz 2011-01-04 $8,992,000
7254374 Switchable multi-transmitter combiner and method 2007-08-07 $22,069,000
7084822 Dual feed common radiator antenna system and method for broadcasting analog and digital signals Jeffrey Brown, John L. Schadler 2006-08-01 $7,160,000
6953346 Method and apparatus for high power switching David B. Folsom, Brian K. Pomerleau 2005-10-11 $19,768,000
5043684 Compact high power, high directivity, waveguide directional coupler utilizing reactively loaded junction Richard I. Bibber 1991-08-27 $5,747,000
4814775 Reconfigurable beam-forming network that provides in-phase power to each region Anthony R. Raab 1989-03-21